Symptoms such as irregular heartbeats,
palpitations, dizziness, fatigue, or signs of worsening heart failure may
necessitate the performance of a Digoxin (Lonaxin) test. This medical
examination measures the levels of the medication digoxin in the blood. Digoxin
is commonly prescribed to manage various heart conditions, including congestive
heart failure and atrial fibrillation. The test ensures that digoxin is within
the therapeutic range, as both insufficient and excessive levels can have
adverse effects.